Troubleshooting; Demolition - EBARA DEMINY Serie Manual De Instrucciones De Empleo Y Manutención

13. TROUBLESHOOTING

If you encounter a fault that is not contemplated in the following table, contact the nearest authorized dealer.
PROBLEM
Pump fails to start.
The pump starts but stops again
immediately
The pump starts but stops after a while
Flow rate insufficient
Over-current
The pump vibrates generating
a loud noise

14. DEMOLITION

When disposing of the pump, comply strictly with the regulations in force in your country, making sure none of the fluid
treated is left inside the pump.
Pay careful attention to the oil in the mechanical seal chamber and the motor chamber.
CAUSE
Loss of phase
Incorrect connection of the electrical power supply
circuit
A fuse has blown
Activation of a earth failure protection switch
The motor has burned out
A motor bearing has broken
The impeller has blocked
The mechanical seal has blocked
Dry operation for a prolonged period of time activates
the thermal protection
High liquid temperature activates the thermal protection Lower water temperature
Rotation in opposite direction
(Three-phase pumps only)
Low water level generating a vacuum of the air
Delivery line blocked
Adhesion of a foreign body to the suction filter
Impeller damaged
Ample drop of voltage of the electrical supply
Loss of phase
Pump operation with opposite rotation direction
The pump has suctioned up a foreign body
The motor bearing has broken
Pump operation with opposite rotation direction (Three-
phase pumps only)
The pump has suctioned up a foreign body
Resonance on delivery lines
ACTION
Inspect the connections and magnetic switch
Inspect the electrical power supply circuit
Replace it with a suitable new one
Repair the section where the current dispersion
has occurred
Repair or replace the motor
Repair or replace the bearing
Clean pump suction
Repair or replace the mechanical seal
Increase water level
Invert two of the phases
Increase water level or lower the pump position
Remove the foreign body
Remove the foreign body
Replace the impeller
Ensure a specialised technician checks the electrical
system
Inspect the connection section and magnetic switch
Check direction of rotation (see chap. 9)
Remove the foreign body
Repair or replace the bearing
Check direction of rotation (see chap. 9)
Remove the foreign body
Modify the line
EN
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